首页 \ 问答 \ 动态添加所有图片框到列表?(Dynamically add all pictureboxes to list?)

动态添加所有图片框到列表?(Dynamically add all pictureboxes to list?)

我正在尝试创建一个名为“pictureBox”+ x的所有图片框的列表。 我尝试了一些我在网上找到的不同方法,但它们没有用:(

简单的“代码”:

int x = 1;

List<PictureBox> list= new List<PictureBox>();


if (there is a picturebox named "pictureBox" + x) {
    list.Add("pictureBox" + x as type PictureBox);
    x = x + 1;
}
else
    Stop running this code;

所以x将会增加,直到找不到更多的图片框。 我怎样才能做到这一点? 谢谢 :)

编辑:我在visual studio中使用winform,我试图使用

list.Add((PictureBox)Controls.Find("pictureBox" + x));

但我无法让它发挥作用。


I'm trying to create a list of all pictureboxes named "pictureBox" + x. I've tried some different methods I found online, but they didn't work :(

Simple "code":

int x = 1;

List<PictureBox> list= new List<PictureBox>();


if (there is a picturebox named "pictureBox" + x) {
    list.Add("pictureBox" + x as type PictureBox);
    x = x + 1;
}
else
    Stop running this code;

So x will be increasing until there is no more pictureboxes found. How can I do this? Thanks :)

Edit: I'm using a winform in visual studio and I tried to use

list.Add((PictureBox)Controls.Find("pictureBox" + x));

but I can't get that to work.


原文:https://stackoverflow.com/questions/26198500
更新时间:2023-08-24 20:08

最满意答案

您可以将HttpSession对象用作用户会话,也可以使用ServletContext对象来共享全局应用程序信息。 然后使用方法getAttribute(String attb)和setAttribute(String attb,String value)在JSP中共享信息。 使用请求时的问题在于请求的域限制了您仅在收到此请求时才使用此信息。

您还可以使用JavaBeans在JSP中共享信息

编辑:你有没有把你的Java代码包含在scriptlet中? 使用<%your code here%>


You can use a HttpSession object as a user session, or use the ServletContext object for sharing global application information. Then use methods getAttribute (String attb) and setAttribute (String attb, String value) for sharing information within JSPs. The issue when you use a request is that the domain of the request is constraining you to use this information only when you receive this request.

You can also use JavaBeans to share information within JSPs

EDIT: Have you included your Java code inside a scriptlet? Using <% your code here %>

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